Android opengl modify vertex array after draw call

Question

在opengl中，是不好的做法还是不建议在绘制完顶点数组后修改它？

Answer 1

It's not bad practice if you modify the vertex array when you draw it as ordinary vertex array.

It's bad practice to modify the vertex array if you use vertex buffer objects in your draw method. That's because you have to reupload it to your VRAM once it is edited.